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(No Model.)

H. J. BELL.

ATMOSPHERIG GAS BURNER.

No. 390,055. Patented Sept. 25, 1888.

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HAROLD J. BELL, OE \VOODBURY, NElV JERSEY, ASSIGNOR TO THE VVELS- BAOH INOANDESCENT GAS LIGHT COMPANY, OF NEW JERSEY.

ATMOSPHERIC GAS-BURNER.

SPECIFICATION forming part of Letters Patent No. 390,055, dated September 25, 1888.

(No model.)

T on whom it may concern.-

Be it known that I, HAROLD J. BELL, a citizen ofthe United States, residing at \Voodbury, in the county of Gloucester and State of New Jersey, haveinvented new and useful Improvements in Atmospheric GasBurners, of which the following is a specification.

The object of my invention is to provide a simple and convenient means for regulating the quantity of air admitted to an atmospheric gasburner, according to the varying quality of gas, and especially for the purpose of controlling the light of an incandescent gas-lamp.

To such end the invention consists in the combination, with a burner-tube having an annular row of lateral air-inlet orifices in its lower end portion, of a vertically-sliding flexible and compressible metallic annular band adapted to be pressed into approximately oval form on the burner-tube,to hug the latter and be held by friction in its adjusted position over the air-inlet orifices.

In the annexed drawings, illustrating the invention, Figure 1 is a perspective view of an 2 atmospheric gasburner tube provided with my improved air-regulating device, the airinlets being shown open or uncovered. Fig. 2 is a vertical longitudinal section of the burnertube,with the air-inlets shown partially closed 0 or covered, and with a bell-shaped shield that is adapted to surround the air-inlets and regulating device. Fig. 3 is a view of the aie regulating ring, collar, or band detached.

The burnertube 1 may be of any suitable 5 or well-known construction, and at its lower end is adapted for attachment to a gas supply pipe either by means of an internally-threaded thimble, 2, or otherwise. If desired, a thin perforated metallic disk, 3, may be placed in 0 the thimble or in the lower part of the burnertube for the purpose of dividing the incoming gas-current. The thimble 2 may be rigidly or permanently connected with the burnertube; but when the perforated disk 3 is em- 5 ployed the thimble is preferably detachable, and formed with a shoulder to support said disk.

In the lower part of the burner-tube1,above the perforated disk 8, is an annular series of lateral airinlets, 4, through which asupply 5o oflateral air may be introduced into the bu rnertube, to be mingled with the gas. These airinlets completely surround the burner-tube, and may be of any desired size.

For the purpose of regulating or controlling the quantity of air admitted through the inlets 4, a hand, ring, or collar, 5, is placed around the burner-tube adjacent to said inlets, either above or below, in such position that it can be readily adjusted, so as to wholly or partially cover or uncover the air-inlets, as may he required. This ring, band, or collar 5 is made of metal sufficiently flexible and compressible to enable it to be pressed into a slightly oval form, as shown by dotted lines in Fig. 3, to facilitate its hugging opposite sides of the tube with sufficient friction to sustain its own weight at any point on said tube and enable it to be moved thereon over any portion of the lateral air-inlets, as may be required, in order to admit only the necessary quantity of air to effect a perfect combustion of the gas, or to prevent the admission of more air than is needed.

The manner of applying the compressible annular band, which is most suitable, is to squeeze the hand between the thumb and finger to a shape resembling an oval in appearance and afterward gently pressing it back to an approximately cylindrical form and then inserting the burner-tube, so that the normal form of the ring is between a cylinder and oval,whereby it hugs the two opposite sides of the burncrtube with sufficient friction to sustain its own weight at any point on the tube.

This construction of band permits the friction to be increased, and provides for suspending the band over any portion of the lateral orifices without resorting to extraneous means for holding the band in its adjusted position to admit the necessary quantity of air for the best effects in combustion of the gas, or to prevent the ad mission of more air than may be requisite.

If desired, a bell-shaped shield, 6, may be loosely suspended from a head or shoulder, 7, 5 that is formed on the burner-tube. This shield is sufficiently large to surround the air-inlets 4 and regulating-baud 5, above which it is susin its lower end portion, of the vertically-slid ing, flexible, and compressible metallic band [5 adapted to be pressed into approximately oval form on the burner to hug two opposite sides of the latter and held by friction in its adjusted position over the airinlet orifices, substantially as described. 2':

In testimony whereof I affix my signature in presence of two witnesses.

HAROLD J. BELL.

Witnesses:

LEwIs STARR, GEo. I-I. BARKER, 

